Min fee config (#15)

### What was the problem?

This PR resolves #14 

### How was it solved?

<!--- Please describe your technical implementation -->

### How was it tested?

<!--- Please describe how you tested your changes -->

scripts/runMainnet.sh

@@ -40,6 +40,8 @@ echo "RPC_PROVIDERS_1135=GELATO,DRPC" >> ${app_dir}/.env
 # Mainnet settings
 echo "RELAYER_ORIGIN_CHAINS=[1,1135]" >> ${app_dir}/.env
 echo "RELAYER_DESTINATION_CHAINS=[1,1135]" >> ${app_dir}/.env
+echo "MIN_RELAYER_FEE_PCT=0.0001" >> ${app_dir}/.env
+
 # Redis settings
 echo "REDIS_URL='redis://127.0.0.1:6379'" >> ${app_dir}/.env
 # Supported token settings